title: Corneal surface irregularities and episodic pain in a patient with mucolipidosis IV.
abstract: Mucolipidosis IV is a lysosomal storage disease characterized by prominent involvement of the corneal epithelium. A 5-year-old boy with mucolipidosis IV experienced recurrent episodes of severe ocular pain, tearing, and ipsilateral facial flushing. This was suggestive of reflex sympathetic dystrophy, a syndrome of pain and sympathetic hyperactivity. The examination revealed marked corneal surface irregularities, corresponding to massive accumulations of intracytoplasmic storage material in the epithelium. Episodic pain in patients with mucolipidosis IV is an important symptom, presumably reflecting the distinctive corneal ultrastructural abnormality in this disease.
authors.affiliation: Neuro-Ophthalmology Unit, Massachusetts Eye and Ear Infirmary, Boston 02114.
authors.forename: N J
authors.initials: NJ
authors.lastname: Newman
authors.forename: T
authors.initials: T
authors.lastname: Starck
authors.forename: K R
authors.initials: KR
authors.lastname: Kenyon
authors.forename: S
authors.initials: S
authors.lastname: Lessell
authors.forename: I
authors.initials: I
authors.lastname: Fish
authors.forename: E H
authors.initials: EH
authors.lastname: Kolodny
mesh_terms: D002387:Cataract Extraction; D002675:Child, Preschool; D003228:Conjunctiva / Q000473:pathology; D003315:Cornea / Q000473:pathology*; D004848:Epithelium / Q000473:pathology; D006801:Humans; D008297:Male; D009081:Mucolipidoses / Q000473:pathology*; D010146:Pain / Q000209:etiology*; D013666:Tears / Q000378:metabolism